Fix a race condition in WebLocksLeader where transactions could be replayed twice on page load #1046
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…nitialization Fix a race condition in WebLocksLeader where transactions could be replayed twice on page load. The issue occurred because: 1. requestLeadership() returned true immediately when lock was available 2. But notifyLeadershipChange(true) was called asynchronously when the fire-and-forget navigator.locks.request() actually acquired the lock 3. This caused loadAndReplayTransactions() to be called twice - once manually and once via the callback The fix has two parts: 1. Set WebLocksLeader.isLeaderState = true synchronously when we know the lock is available, so the async notifyLeadershipChange(true) doesn't trigger the callback again 2. Set OfflineExecutor.isLeaderState based on requestLeadership() return value, since we can no longer rely on the callback to set it Reported by Toba on Discord.
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kevin-dp
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Jan 7, 2026
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Fixes #921 |
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🎉 This PR has been released! Thank you for your contribution! |
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Fix a race condition in WebLocksLeader where transactions could be replayed twice on page load. The issue occurred because:
The fix sets isLeaderState = true synchronously when we know the lock is available, so the async notifyLeadershipChange(true) doesn't trigger the callback again (the guard checks isLeaderState !== isLeader).
Reported by Toba on Discord.
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pnpm test:pr.🚀 Release Impact